CN102832988A - System and method for acquiring and distributing baseband data of remote sensing satellite - Google Patents
System and method for acquiring and distributing baseband data of remote sensing satellite Download PDFInfo
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Abstract
The invention provides a system for acquiring and distributing baseband data of a remote sensing satellite. The system comprises a task management device, a data acquiring device, a data storage device and a data distributing device. When detecting a data acquisition task list, the data acquiring device acquires baseband data of the remote sensing satellite and corresponding time code information thereof from the remote sensing satellite by a fully digital demodulator via the network. The data distributing device distributes the required baseband data of the remote sensing satellite to user equipment after receiving data distribution requests of the user equipment. By the aid of the system, the baseband data of the remote sensing satellite can be acquired in real time via the network, and meanwhile, uniform data distributing services can be provided to rear-end equipment via the network, and accordingly, limits of ECL (emitter-coupled logic) signal transmission distance and special acquisition cards are eliminated.
Description
Technical field
The present invention relates to the remote sensing satellite base band data and gather and the distribution field, more particularly, relate to collection of a kind of remote sensing satellite base band data and dissemination system and method.
Background technology
The reception of remote sensing satellite data and record are that the remote sensing satellite data are obtained first link with processing procedure.The remote sensing satellite digital baseband signal generally includes data-signal and clock signal.Under conventional situation; The input mode of remote sensing satellite digital baseband signal collection is the ECL signal; After this ECL signal gets into recording equipment, utilize special-purpose data collecting plate card to accomplish the string and the conversion of ECL signal, through pci bus base-band data signal (is for example write data storage device then; Internal memory) in, thereby generates the binary system remote sensing satellite initial data that subsequent processing device needs.
Yet above-mentioned ECL signal data acquisition mode adopts analog demodulator usually, needs the exclusive data analog input card to carry out serial to parallel conversion, thereby causes versatility bad.And there is restriction in the ECL aspect to transmission range and picking rate.For example, the cable transmission distance that the ECL signal utilizes should not surpass 15 meters, and the highest picking rate (sign indicating number speed) is below 1Gbps.In this case, the layout of data acquisition equipment can receive very large restriction.
In addition; The distribution of present remote sensing satellite base band data is usually at the reception laggard row that finishes; Adopt the FTP order that remote sensing satellite base band data file is sent to fixing ftp server, thereby the distribution services of safe and effective real-time remote sensing satellite base band data can't be provided for the multiple treatment facility of local and remote simultaneously.
Summary of the invention
In view of the above problems; An object of the present invention is to provide collection of a kind of remote sensing satellite base band data and dissemination system; This system can accomplish the real-time collection of remote sensing satellite base band data through network mode, simultaneously through network to the back-end equipment the unified data distribution services is provided.
Another object of the present invention provides a kind of data acquisition unit and method of remote sensing satellite base band data.
Another object of the present invention provides a kind of data delivery device and method of remote sensing satellite base band data.
According to an aspect of the present invention; Collection of a kind of remote sensing satellite base band data and dissemination system are provided; Comprise: task management device; Be used for when receiving the data acquisition request of user's input, generating the data acquisition job order, and the data acquisition job order that is generated being write in the assigned address of data storage device; Data acquisition unit; Be used for when there is the data acquisition job order in the assigned address that detects data storage device; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain; Data storage device is used to store data acquisition job order, the remote sensing satellite base band data that is obtained and remote sensing satellite base band data timecode information; And data delivery device, be used for after the data dispense request that receives the subscriber equipment transmission, the satellite base band data of being asked being distributed to subscriber equipment.
In one or more examples aspect above-mentioned, said data acquisition unit can comprise: detection module is used for continuing the assigned address of scan-data storage device, to detect in the data storage device whether have the data acquisition job order; Base band data collection request generation module is used for detecting when having the data acquisition job order, based on the data acquisition job order, generates base band data collection request; Base band data is gathered request sending module, is used for the base band data collection request that is generated, and sends to the all-digital demodulation device corresponding with the data acquisition job order; And base band data acquisition module; Be used for based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain.
In one or more examples aspect above-mentioned, said data acquisition job order can comprise task odd numbers, satellite name, orbit number, data acquisition beginning and ending time, record data block size, all-digital demodulation device IP address, all-digital demodulation device remote sensing satellite base band data port numbers, connect the trial of all-digital demodulation device time, data acquisition unit file outgoing route and/or system journal directory information.
In one or more examples aspect above-mentioned, said task management device can comprise: data acquisition job order generation module is used for when receiving the data acquisition request of user's input, generating the data acquisition job order; And writing module, be used for the data acquisition job order that is generated is write the assigned address of data storage device.
In one or more examples aspect above-mentioned; Said data dispense request can comprise user equipment information and data application information; Said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards.
In one or more examples aspect above-mentioned; Collection of said remote sensing satellite base band data and dissemination system can also comprise: the user safety authentication device; Be used for after receiving the data dispense request,, subscriber equipment carried out authentication based on user equipment information.
In one or more examples aspect above-mentioned, said data delivery device can comprise: data dispense request receiver module is used to receive the data dispense request of sending from subscriber equipment; And the data distribution module, be used for after receiving the data dispense request, based on the applying type in the data application information of data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
In one or more examples aspect above-mentioned; When said applying type is real-time Data Transmission; Said data distribution module can comprise: data acquisition job order determination module; Be used for application satellite name and application orbit number, from the data acquisition job order of carrying out, confirm the data acquisition job order corresponding with the data dispense request based on the data application information; The information acquisition module is used for based on determined data acquisition job order, obtains corresponding remote sensing satellite base band data file and remote sensing satellite base band data timecode information; Data original position determination module is used for based on the remote sensing satellite base band data timecode information that is obtained, the data original position of the definite data that should send; Data read module is used for reading the data that begin from the data original position in real time from the remote sensing satellite base band data file of data storage device; And first sending module, the data that read are sent to the subscriber equipment that sends the data dispense request, finish up to data acquisition.
In one or more examples aspect above-mentioned; At said applying type is afterwards during transfer of data; Said data distribution module can comprise: satellite base band data file determination module; Be used for application satellite name and application orbit number, confirm the corresponding remote sensing satellite base band data file of data dispense request that sends with subscriber equipment based on the data application information; And second sending module, be used for determined remote sensing satellite base band data file is sent to the subscriber equipment that sends the data dispense request.
According to a further aspect in the invention, a kind of data acquisition unit of remote sensing satellite base band data is provided, has comprised: detection module is used for continuing the assigned address of scan-data storage device, to detect in the data storage device whether have the data acquisition job order; Base band data collection request generation module is used for detecting when having the data acquisition job order, based on the data acquisition job order, generates base band data collection request; Base band data is gathered request sending module, is used for the base band data collection request that is generated, and sends to the all-digital demodulation device corresponding with the data acquisition job order; And base band data acquisition module; Be used for based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; And obtain remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved; Said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain; Wherein, said data acquisition job order is when receiving the data acquisition request of user's input, to generate, and is written in the assigned address of data storage device.
According to a further aspect in the invention; A kind of data delivery device of remote sensing satellite base band data is provided; Comprise: data dispense request receiver module, be used to receive the data dispense request of sending from subscriber equipment, said data dispense request comprises user equipment information and data application information; Said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards; And the data distribution module, be used for after receiving the data dispense request, based on the applying type in the data application information of data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
According to a further aspect in the invention; A kind of remote sensing satellite base band data acquisition method is provided; Comprise: continue the assigned address of the data storage device in base band data collection of scanning remote sensing satellite and the dissemination system, to detect in the data storage device whether have the data acquisition job order; Detecting when having the data acquisition job order,, generate base band data collection request based on the data acquisition job order; With the base band data collection request that is generated, send to the all-digital demodulation device corresponding with the data acquisition job order; And based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; Said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain; And obtain remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved; Wherein, Said data acquisition job order is when receiving the data acquisition request of user's input, to generate, and is written in the assigned address of data storage device.
According to a further aspect in the invention; A kind of remote sensing satellite base band data distribution method is provided; Comprise: receive the data dispense request of sending from subscriber equipment; Said data dispense request comprises user equipment information and data application information, and said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards; And after receiving the data dispense request, the applying type that comprises in the data application information based on the data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
Utilize collection of above-mentioned remote sensing satellite base band data and dissemination system; Can accomplish the real-time collection of remote sensing satellite base band data through network; Simultaneously through network to the back-end equipment the unified data distribution services is provided, for the multiple treatment facility that is deployed in local and remote provides remote sensing satellite base band data distribution services in real time safe and effective or afterwards.
In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention comprise the characteristic that the back will specify and in claim, particularly point out.Following explanation and accompanying drawing have specified some illustrative aspects of the present invention.Yet, the indication of these aspects only be some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Description of drawings
According to following detailed description of carrying out with reference to accompanying drawing, above-mentioned and other purposes, feature and advantage of the present invention will become more obvious.In the accompanying drawings:
Fig. 1 shows the work sketch map according to an example of remote sensing satellite base band data collection according to the present invention and dissemination system;
Fig. 2 illustrates the block diagram according to the configuration of an example of remote sensing satellite base band data collection according to the present invention and dissemination system;
Fig. 3 shows the block diagram of an example of the task management device among Fig. 2;
Fig. 4 shows the block diagram of an example of the data acquisition unit among Fig. 2;
Fig. 5 shows an example of the institutional framework of remote sensing satellite base band data file;
Fig. 6 shows the sketch map of an example of the data structure of remote sensing satellite base band data timecode information file;
Fig. 7 shows the block diagram of an example of the data delivery device among Fig. 2;
Fig. 8 shows the block diagram in an example of the data distribution module of applying type when being real-time remote sensing satellite base band data transmission among Fig. 7;
It among Fig. 7 is the block diagram of an example of the data distribution module during the remote sensing satellite base band data transmission afterwards at applying type that Fig. 9 shows;
Figure 10 shows the overview flow chart according to the data acquisition of remote sensing satellite base band data of the present invention;
Figure 11 shows the flow chart according to an example of the data acquisition of remote sensing satellite base band data of the present invention;
Figure 12 shows the overview flow chart according to the data distribution procedure of remote sensing satellite base band data of the present invention; With
Figure 13 shows the flow chart according to an example of the data distribution procedure of remote sensing satellite base band data of the present invention.
Identical label is indicated similar or corresponding feature or function in institute's drawings attached.
Embodiment
Various aspects of the present disclosure are described below.Should be understood that the instruction of this paper can be with varied form imbody, and disclosed in this article any concrete structure, function or both only are representational.Based on the instruction of this paper, those skilled in the art should be understood that an aspect disclosed herein can be independent of any others and realize, and the two or more aspects in these aspects can make up according to variety of way.For example, can use aspect, implement device or the hands-on approach of any number that this paper sets forth.In addition, can use other structure, function or except one or more aspects that this paper set forth or be not the 26S Proteasome Structure and Function of one or more aspects that this paper set forth, realize this device or put into practice this method.In addition, any aspect described herein can comprise at least one element of claim.
Below with accompanying drawings according to embodiments of the invention.
Fig. 1 shows the work sketch map according to an example of remote sensing satellite base band data collection according to the present invention and dissemination system.
As shown in Figure 1, the collection of remote sensing satellite base band data links to each other with all-digital demodulation device, a plurality of local treatment facilities 1 and a plurality of strange lands treatment facility 2 respectively with dissemination system.
When receiving the data acquisition task that the user assigns, the remote sensing satellite base band data gather with dissemination system based on the C/S framework, utilize ICP/IP protocol and all-digital demodulation device to communicate, the collecting work of completion remote sensing satellite base band data.In the process that communicates with the all-digital demodulation device; The all-digital demodulation device is as server end; And the data acquisition unit in collection of remote sensing satellite base band data and the dissemination system is as client; Communication between the two is the communication protocol packet based on ICP/IP protocol of all-digital demodulation device regulation, and this communication protocol packet mainly comprises remote sensing satellite base band data request protocol bag, remote sensing satellite base band data protocol package and rejects the response protocol bag.
When receiving the data dispense request that subscriber equipment sends, the remote sensing satellite base band data gather with dissemination system based on the C/S framework, data delivery device as server end, is monitored all data dispense request and it is responded.Then, according to the data dispense request, the data of subscriber equipment being asked through network send to subscriber equipment, for example local treatment facility 1 and strange land treatment facility 2.
Fig. 2 shows the block diagram according to the configuration of an example of remote sensing satellite base band data collection according to the present invention and dissemination system 200.As shown in Figure 2, collection of remote sensing satellite base band data and dissemination system 200 comprise task management device 210, data acquisition unit 220, data storage device 230, user safety authentication device 240 and data delivery device 250.
Fig. 3 shows the block diagram of an example of the task management device 210 among Fig. 2.As shown in Figure 3, task management device 210 comprises data acquisition job order generation module 211 and writing module 213.
Data acquisition job order generation module 211 is used for when receiving the data acquisition request of user's input, based on this data acquisition request, generating the data acquisition job order.Writing module 213 is used for the data acquisition job order that is generated is write the assigned address of data storage device.
In an example of the present invention, the data acquisition job order comprises task odd numbers (order_id), satellite name (sat_id), orbit number (orbit_number), data acquisition beginning and ending time (acq_start_time/acq_stop_time), record data block size (block_size), all-digital demodulation device IP address (dem_address), all-digital demodulation device remote sensing satellite base band data port numbers (dem_dat_port), connects all-digital demodulation device trial time (connect_try_time), data acquisition unit file outgoing route (acq_output_path), system journal catalogue (log_dir) information.The data acquisition job order with simple ODL document form write the data storage device specified path (be assumed to be/Data/acq/plan/scan_dir).In addition, the naming rule of data acquisition job order is generally " task odd numbers satellite name orbit number .ODL ", and wherein the task odd numbers accounts for 8, and the satellite name accounts for 2, and orbit number accounts for 6.Represent that like 00000121_TH_019234.ODL the task odd numbers is 121, orbit number is 19234 THEOS satellite data acquisition tasks list, and this job order particular content is following:
BEGIN
OBJECT=ACQ
order_id=121
sat_id=TH
orbit_number=019234
acq_start_time=″2012-06-0806:18:00.00″
acq_stop_time=″2012-06-0806:28:00.00″
block_size=512
dem_address=10.4.2.14
dem_dat_port=5880
connect_try_time=10
acq_output_path=/Data/acq/raw/TH_20120608061800_019234_121.dat
log_dir=/Data/acq/log/
END_OBJECT=ACQ
END
Data acquisition unit 220 links to each other with data storage device 230; Be used for when there is the data acquisition job order in the assigned address that detects data storage device; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain.
Fig. 4 shows the block diagram of an example of the data acquisition unit 220 among Fig. 2.As shown in Figure 4, data acquisition unit 220 comprises detection module 221, base band data collection request generation module 223, base band data collection request sending module 225 and base band data acquisition module 227.
With aforementioned example tasks singly is example, and base band data collection request generation module 223 generates data acquisition request protocol bag according to this job order, and is as shown in table 1 below.Data acquisition request protocol bag comprises request header information, data acquisition zero-time, data acquisition concluding time, data block size, each data block number of sending, request ending message and reserved area.Request header information, request ending message are used to indicate the beginning and the end of request protocol bag, so that the all-digital demodulation device carries out identification and parsing to solicited message between the two.The data acquisition zero-time is represented the time started of data acquisition, and the data acquisition concluding time is represented the concluding time of data acquisition.The size of the data block that data block size expression all-digital demodulation device is sent.The number of the data block that each protocol package was comprised when each data block number of sending represented that the all-digital demodulation device sends data at every turn.
The data structure of table 1 data acquisition request protocol bag
When arriving job order predetermined data collection zero-time (acq_start_time); Base band data is gathered the port that request sending module 225 sends to above-mentioned data acquisition request protocol bag appointment; This port is unique definite by all-digital demodulation device IP address (dem_address) and all-digital demodulation device remote sensing satellite base band data port numbers (dem_dat_port), is 10.4.2.14:5880 like the unique definite port of aforementioned job order.
After base band data collection request was sent, the base band data acquisition module promptly began to obtain the remote sensing satellite base band data through the all-digital demodulation device.The base band data acquisition module is according to the data block size that requires in the job order and the time tag of each data block; Carry out record according to following form; Generation is corresponding to the remote sensing satellite base band data file of job order, and the file that generates like aforementioned job order record is called 00000121_TH_019234.DAT.Fig. 5 shows an example of the institutional framework of remote sensing satellite base band data file.For example, data acquisition unit 220 continue in the scan-data storage device assigned addresses (as/Data/acq/plan/scan_dir) whether have a data acquisition job order.If there is the data acquisition job order; Then initiate data acquisition according to the data acquisition job order at once; And the data acquisition job order transferred in the job order catalogue of carrying out go (as/Data/acq/plan/working_dir); After this data acquisition task is accomplished, job order transferred in the job order catalogue that is finished (as/Data/acq/plan/done_dir).
Base band data acquisition module 227 is used for based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain.
Here, data acquisition unit utilizes ICP/IP protocol and all-digital demodulation device to communicate based on the C/S framework, accomplishes the collecting work of remote sensing satellite base band data.In the process that communicates with the all-digital demodulation device; The all-digital demodulation device is as server end; And data acquisition unit is as client; Communication between the two is the communications protocol bag based on ICP/IP protocol of all-digital demodulation device regulation, mainly comprises remote sensing satellite base band data request protocol bag, remote sensing satellite base band data protocol package and rejects the response protocol bag.Particularly; Data acquisition unit is when carrying out the collection of remote sensing satellite base band data; Defer to the procotol of all-digital demodulation device; At first, gather request sending module 225 through base band data and send remote sensing satellite base band data real time data transmission request protocol bag (that is base band data collection request) to the all-digital demodulation device.Then; After the all-digital demodulation device receives this base band data collection request, according to this base band data collection request, (promptly based on the number of delivering a letter under the satellite that receives from remote sensing satellite; The remote sensing satellite base band data); Generate remote sensing satellite base band data protocol package, and send to data acquisition unit (base band data acquisition module) through network, the size of data block and data block number are determined by base band data collection request in the remote sensing satellite base band data protocol package.The base band data acquisition module carries out dissection process to the remote sensing satellite base band data communication protocol packet of being obtained, and obtains remote sensing satellite base band data and corresponding remote sensing satellite base band data timecode information.Then, resulting remote sensing satellite base band data and corresponding remote sensing satellite base band data timecode information are deposited in the data storage device.
Remote sensing satellite base band data in the data storage device exists with the binary data file form, and corresponding remote sensing satellite base band data timecode information is stored as binary data file.In addition, the name of remote sensing satellite base band data timecode information filename and remote sensing satellite base band data is in full accord except that suffix.
Fig. 6 shows the sketch map of an example of the data structure of remote sensing satellite base band data timecode information file.As shown in Figure 6, this timecode information file comprises in timing code field, the file final position field in the starting position field and file.Said timing code is represented the timing code of remote sensing satellite base band data.The starting position of this remote sensing satellite base band data in remote sensing satellite base band data file represented in the starting position in the file.Final position is represented the end position of this remote sensing satellite base band data in remote sensing satellite base band data file in the file.
Data storage device 230 links to each other with task management device 210, data acquisition unit 220 and data delivery device 250, is responsible for the data acquisition job order that storage remote sensing satellite base band data, remote sensing satellite base band data timecode information and task management device 210 that data acquisition unit obtained are generated.In addition, comprise that in collection of remote sensing satellite base band data and dissemination system 200 under the situation of user safety authentication device 240, data storage device 230 also links to each other with user safety authentication device 240, is used to store information of registered users.When carrying out user safety authentication, the information of registered users of being stored is provided for user safety authentication device 240.
User safety authentication device 240 links to each other with data delivery device 250 with data storage device 230, is used for after receiving the data dispense request, based on user equipment information, subscriber equipment is carried out authentication.When needs carried out user safety authentication, the user also needed information of registered users, and the user profile of being registered is stored in the data storage device 230.After the data dispense request that receives the subscriber equipment transmission; The user safety authentication device is through comparing user profile that comprises in the data dispense request and the information of registered users of being stored; Whether come the user is carried out authentication, be registered validated user to judge this user.If validated user then allows to this user's distributing data.Otherwise, do not allow to this user's distributing data.
Information of registered users also with the storage of ODL document form, comprises user name (user_name), password (user_passwd), User IP (user_ip), user's MAC address (user_mac), maximum number of connections (max_connection), authentication mode (access_method) information.User profile ODL file sample is following:
BEGIN
OBJECT=USERS_david
user_name=david
user_passwd=666_666
user_ip=10.4.2.14
user_mac=00-ff-ff-da-df-fd-52
max_connection=2
access_method=ip_and_mac
END_OBJECT=USERS_david
OBJECT=USERS_james
user_name＝james
user_passwd=666_666
user_ip=10.4.2.15
user_mac=00-ff-ee-da-df-fd-51
max_connection=2
access_method=passwd
END_OBJECT=USERS_james
END
In the superincumbent sample; User david authentication mode is that IP adds MAC address authentication; Could be when having only user_ip and user_mac under user profile ODL file " OBJECT=USERS_david " column in the user profile of submitting dispense request to and the data storage device consistent through authentication, user james then need meet with user_name under " OBJECT=USERS_james " column in the user profile ODL file and user_passwd can be through authentication.
Data delivery device based on the C/S framework, responds as server end all data dispense request of monitoring and to it when carrying out the data distribution services.Data delivery device in data acquisition unit work, the data dispense request that monitoring possibly arrive, said data dispense request comprises user profile, data application information.Said data application information comprises applying type, application satellite name and application orbit number.Said applying type comprises real-time Data Transmission and transfer of data afterwards.
Fig. 7 shows the block diagram of an example of the data delivery device 250 among Fig. 2.As shown in Figure 6, data delivery device 250 comprises data dispense request receiver module 251 and data distribution module 253.
Data dispense request receiver module 251 is used to receive the data dispense request of sending from subscriber equipment.Data distribution module 253 is used for after receiving the data dispense request, and based on the applying type in the data application information of data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
When data delivery device carries out real-time remote sensing satellite base band data distribution services, directly the remote sensing satellite base-band data stream in the data storage device is sent to requesting service in real time.When data delivery device carries out afterwards remote sensing satellite base band data distribution services, search for corresponding remote sensing satellite base band data file according to application satellite name in the data application information in the dispense request and application orbit number, whole file is sent to requesting service.If there is not corresponding document, then send the rejection response that comprises error message.In the process that the data distribution services is provided, data delivery device responds the data dispense request that possibly receive.In another example of the present invention, after the data distribution finished, data delivery device sends to requesting service distributed the information that finishes, and this distribution information of finishing comprises the distribution beginning and ending time, sends data volume.
Fig. 8 shows the block diagram in an example of the data distribution module of applying type when being real-time remote sensing satellite base band data transmission among Fig. 7.
As shown in Figure 8; When applying type was real-time remote sensing satellite base band data transmission, data distribution module 253 comprised data acquisition job order determination module 2531, information acquisition module 2532, data original position determination module 2533, data read module 2534 and first sending module 2535.
Data acquisition job order determination module 2531 is used for after receiving the data dispense request; Based on application satellite name in the data application information and application orbit number, from the data acquisition job order of carrying out, confirm the data acquisition job order corresponding with the data dispense request.
Data original position determination module 2533 is used for based on the remote sensing satellite base band data timecode information that is obtained, the data original position of the definite data that should send.Data read module 2534 is used for reading the data that begin from the data original position in real time from the remote sensing satellite base band data file of data storage device.First sending module 2535 is used for the data that read are sent to the subscriber equipment that sends the data dispense request, finishes up to data acquisition.
It among Fig. 7 is the block diagram of an example of the data distribution module during the remote sensing satellite base band data transmission afterwards at applying type that Fig. 9 shows
As shown in Figure 9, be afterwards during the remote sensing satellite base band data transmission at applying type, data distribution module 253 comprises the satellite base band data file determination module 2537 and second sending module 2539.
Satellite base band data file determination module 2537 is used for the application satellite name and application orbit number based on the data application information, confirms the corresponding remote sensing satellite base band data file of data dispense request that sends with subscriber equipment.Second sending module 2539 is used for determined remote sensing satellite base band data file is sent to the subscriber equipment that sends the data dispense request.In this example, second sending module 2539 sends to subscriber equipment together with whole file.
Comprise user safety authentication device 240 in the system of describing in the above, but in another example of the present invention, if need not carry out safety certification, then collection of remote sensing satellite base band data and dissemination system also can not comprise user safety authentication device 240.In this case, the data dispense request can only comprise the data application information.Data delivery device 250 just sends the satellite base band data of being asked according to the data application information to subscriber equipment after the data dispense request that receives the subscriber equipment transmission.
As above remote sensing satellite base band data according to the present invention collection and dissemination system are illustrated referring to figs. 1 through Fig. 9.To describe remote sensing satellite base band data according to the present invention collection and distribution method to Figure 13 with reference to Figure 10 below.
Figure 10 shows the overview flow chart according to the data acquisition of remote sensing satellite base band data of the present invention.
Shown in figure 10; When carrying out the collection of remote sensing satellite base band data, at first, at step S1010; Continue the assigned address of the data storage device in base band data collection of scanning remote sensing satellite and the dissemination system, to detect in the data storage device whether have the data acquisition job order.Here, said data acquisition job order is when receiving the data acquisition request of user's input, to generate, and is written in the assigned address of data storage device.For example, after the user assigns the data acquisition task through the task management interface of task management device, generate the data acquisition job order, and write the assigned address of data storage device.
If do not detect the data acquisition job order, that is, the testing result of step S1010 then turns back to step S1010 for not, continues to detect.
If detect the data acquisition job order, that is, the testing result of step S1010 then at step S1020, based on detected data acquisition job order, generates base band data collection request for being.Then,,, send to the all-digital demodulation device corresponding, promptly have the all-digital demodulation device of the all-digital demodulation device IP address in the data acquisition job order with the data acquisition job order through network with the base band data collection request that is generated at step S1030.
Then; At step S1040; Based on the base band data collection request that is generated,, obtain remote sensing satellite base band data and corresponding remote sensing satellite base band data timecode information from the remote sensing satellite corresponding with the data acquisition job order through network via this all-digital demodulation device.Here, corresponding with data acquisition job order remote sensing satellite is the remote sensing satellite with the satellite name in the data acquisition job order.
Figure 11 shows the flow chart according to an example of the data acquisition of remote sensing satellite base band data of the present invention, and process shown in Figure 11 is to detect the data acquisition job order and generate the process of carrying out after the base band data collection request.
Shown in figure 11, after detecting the data acquisition job order and generating base band data collection request,,, attempt connecting with the all-digital demodulation device through network based on the all-digital demodulation device IP address that comprises in the data acquisition job order at step S1110.Then, at step S1120, judge whether it is not to surpass successful connection and trial time the scheduled time (that is, connect the all-digital demodulation device and attempt the time).
If the judged result of step S1120 for being, then at step S1130, is sent data transfer instruction packet (that is base band data collection request) to the all-digital demodulation device.If the judged result of step S1120 then turns back to step S1110 for not.
At step S1140, receive from what the all-digital demodulation device transmitted and gather the request responding packet to base band data, said response data packet generally includes data reject protocol bag or remote sensing satellite base band data protocol package.
At step S1150, judge the type of response data packet.
If response data packet for rejecting the response protocol bag, then at step S1160, is extracted error reason wherein, and with the daily record of error message write error.Then, at step S1170, receive error reason to user feedback.In another example of the present invention, also can omit step S1160 and S1170.Above-mentioned flow process also correspondingly is revised as, and when receiving rejection response protocol bag, flow process finishes.
If response data packet is a remote sensing satellite base band data protocol package,,, resolve the remote sensing satellite base-band data stream of also extracting wherein according to the communication protocol between all-digital demodulation device and collection of remote sensing satellite base band data and dissemination system then at step S1180.Then, at step S1190, remote sensing satellite base band data that is extracted and corresponding remote sensing satellite base band data timecode information are stored in the data storage device.
At step S1195, whether the judgment data collection is accomplished.If no, then turn back to step S1180, resolve constantly and the remote sensing satellite base-band data stream is deposited in the internal memory and hard disk of data storage device, finish until data acquisition.
Figure 12 shows the overview flow chart according to the data distribution procedure of remote sensing satellite base band data of the present invention.
Shown in figure 12; At step S1210; The data dispense request that reception is sent from subscriber equipment; Said data dispense request comprises user equipment information and data application information, and said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards.
Then, at step S1220, after receiving the data dispense request, the applying type that comprises in the data application information based on the data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
Figure 13 shows the flow chart according to an example of the data distribution procedure of remote sensing satellite base band data of the present invention.
Shown in figure 13, after collection of remote sensing satellite base band data and dissemination system start, monitor whether receive the data dispense request that subscriber equipment sends at step S1310 data delivery device.
If do not receive, then run to the collection of step S1330 judgment data and whether finish.If data acquisition does not finish, that is, the result of step S1330 then turns back to step S1310 for not, and whether continue to monitor has request of data to arrive.If gather and to finish, promptly the result of step S1330 then proceeds to step S1340 for being, wait for that all ask all to dispose after, withdraw from.
If receive the data dispense request, then proceed to step S1320, handle in step S1320 initiation request.Request Processing starts the back independent operating, and former monitoring step is returned after Request Processing starts immediately, and moves to step S1330.
More than be the main processing flow process that monitoring and initiation request are handled, the Request Processing process will be independent of aforementioned process flow operation after starting.Particularly, Request Processing starts the back at step S1321, extracts the user profile in the data dispense request.Then, at step S1322, utilize the user safety authentication device, the information of registered users of storing in user profile of being extracted and the data storage device is compared, whether the subscriber equipment that sends this data dispense request with judgement is legal users equipment.
If illegal,, send the illegal prompting of request to sending requesting users equipment then at step S1323.Subsequently, proceed to step S1327.
If legal,, send acknowledge message to sending requesting users equipment then at step S1324.Then, at step S1325,, send in real time or remote sensing satellite base band data afterwards to subscriber equipment according to the applying type in the data application information of data dispense request.About the process of transmitting of remote sensing satellite base band data in real time or afterwards as stated, no longer describe at this.
Then, at step S1326, send data to requesting service and distribute the message that finishes.Subsequently, proceed to step S1327.
At step S1327, Request Processing is withdrawed from request, and this request of sign disposes.
As above described according to remote sensing satellite base band data of the present invention collection and distribution procedure to Figure 13 with reference to Figure 10.Here be noted that the embodiment to Figure 13 description, can also carry out various modification to Figure 10.
For example, to the embodiment that describes among Figure 13, need not carry out to omit step S1321-S1323 under the situation of user safety authentication.In addition, in another example of the present invention, also can omit step S1327.In another example of the present invention, also can omit step S1324.
Utilize remote sensing satellite base band data of the present invention collection and dissemination system; Accomplish the real-time collection of remote sensing satellite base band data through network; Simultaneously through network to the back-end equipment the unified data distribution services is provided, for the multiple treatment facility that is deployed in local and remote provides remote sensing satellite base band data distribution services in real time safe and effective or afterwards.
In addition; According to the present invention; Pass through network mode; Make collection of remote sensing satellite base band data and dissemination system break away from the restriction of disposing distance, and the unified data distribution services is provided, make collection of remote sensing satellite base band data and dissemination system need not special-purpose data acquisition equipment for other remote sensing satellite base band data treatment facilities; Utilize the network equipment of different performance just can satisfy collection and the distribute work that passes speed, the requirement of different pieces of information dispense rate under the different remote sensing satellite base band datas; Simplified the deployment way of remote sensing satellite base band data collection greatly, reduced lower deployment cost, made the deployment way of remote sensing satellite base band data back-end processing equipment also more safe, easy simultaneously with dissemination system.
In addition, according to the method for the invention, the mode of utilizing the data acquisition job order to combine with digital demodulator can realize in the same time period, gathered when realizing many remote sensing satellite base band datas through network; Utilize the application information in the dispense request; The remote sensing satellite base band data that unique definite needs are distributed; In conjunction with monitoring and the concurrent function of TCP/IP, realized simultaneously, as required a plurality of remote sensing satellite base band datas being carried out in real time or afterwards remote sensing satellite base band data distribution function through network.Thus, the present invention can realize the collection of remote sensing satellite base band data and the dissemination system of input more than, many outputs, and realizes the collection and the distribute work of multi-satellite simultaneously, has greatly improved the usefulness of data acquisition and dissemination system.
In addition, can also be implemented as the computer program of carrying out by CPU according to the method for the invention.When this computer program is carried out by CPU, carry out the above-mentioned functions that limits in the method for the present invention.
In addition, said method step and the system unit computer readable storage devices that also can utilize controller (for example, processor) and be used to store the computer program that makes controller realize above-mentioned steps or Elementary Function realizes.
Although the disclosed content in front shows exemplary embodiment of the present invention, should be noted that under the prerequisite of the scope of the present invention that does not deviate from the claim qualification, can carry out multiple change and modification.Function, step and/or action according to the claim to a method of inventive embodiments described herein do not need to carry out with any particular order.In addition, although element of the present invention can be with individual formal description or requirement, also it is contemplated that a plurality of, only if clearly be restricted to odd number.
Be described though as above described each embodiment according to the present invention, it will be appreciated by those skilled in the art that each embodiment that the invention described above is proposed, can also on the basis that does not break away from content of the present invention, make various improvement with reference to figure.Therefore, protection scope of the present invention should be confirmed by the content of appending claims.
Claims (13)
1. a remote sensing satellite base band data is gathered and dissemination system, comprising:
Task management device is used for when receiving the data acquisition request of user's input, generating the data acquisition job order, and the data acquisition job order that is generated being write in the assigned address of data storage device;
Data acquisition unit; Be used for when there is the data acquisition job order in the assigned address that detects data storage device; Obtain remote sensing satellite base band data protocol package through network from the all-digital demodulation device corresponding with the data acquisition job order; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain;
Data storage device is used to store data acquisition job order, the remote sensing satellite base band data that is obtained and remote sensing satellite base band data timecode information; And
Data delivery device is used for after the data dispense request that receives the subscriber equipment transmission, the satellite base band data of being asked being distributed to subscriber equipment.
2. remote sensing satellite base band data as claimed in claim 1 is gathered and dissemination system, and wherein, said data acquisition unit comprises:
Detection module is used for continuing the assigned address of scan-data storage device, to detect in the data storage device whether have the data acquisition job order;
Base band data collection request generation module is used for detecting when having the data acquisition job order, based on the data acquisition job order, generates base band data collection request;
Base band data is gathered request sending module, is used for through network, and the base band data collection request that is generated is sent to the all-digital demodulation device corresponding with the data acquisition job order; And
The base band data acquisition module; Be used for based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain.
3. remote sensing satellite base band data as claimed in claim 1 is gathered and dissemination system; Wherein, said data acquisition job order comprises task odd numbers, satellite name, orbit number, data acquisition beginning and ending time, record data block size, all-digital demodulation device IP address, all-digital demodulation device remote sensing satellite base band data port numbers, connects the trial of all-digital demodulation device time, data acquisition unit file outgoing route and/or system journal directory information.
4. remote sensing satellite base band data as claimed in claim 1 is gathered and dissemination system, and wherein, said task management device comprises:
Data acquisition job order generation module is used for when receiving the data acquisition request of user's input, based on this data acquisition request, generating the data acquisition job order; And
Writing module is used for the data acquisition job order that is generated is write the assigned address of data storage device.
5. remote sensing satellite base band data as claimed in claim 1 is gathered and dissemination system; Wherein, Said data dispense request comprises user equipment information and data application information; Said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards.
6. remote sensing satellite base band data as claimed in claim 5 is gathered and dissemination system, also comprises:
The user safety authentication device is used for after receiving the data dispense request, based on user equipment information, subscriber equipment is carried out authentication.
7. remote sensing satellite base band data as claimed in claim 5 is gathered and dissemination system, and wherein, said data delivery device comprises:
Data dispense request receiver module is used to receive the data dispense request of sending from subscriber equipment; And
The data distribution module is used for after receiving the data dispense request, and based on the applying type in the data application information of data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
8. remote sensing satellite base band data as claimed in claim 7 is gathered and dissemination system, and wherein, when said applying type was real-time Data Transmission, said data distribution module comprised:
Data acquisition job order determination module is used for application satellite name and application orbit number based on the data application information, from the data acquisition job order of carrying out, confirms the data acquisition job order corresponding with the data dispense request;
The information acquisition module is used for based on determined data acquisition job order, obtains corresponding remote sensing satellite base band data file and remote sensing satellite base band data timecode information;
Data original position determination module is used for based on the remote sensing satellite base band data timecode information that is obtained, the data original position of the definite data that should send;
Data read module is used for reading the data that begin from the data original position in real time from the remote sensing satellite base band data file of data storage device; And
First sending module sends to the subscriber equipment that sends the data dispense request with the data that read, and finishes up to data acquisition.
9. remote sensing satellite base band data as claimed in claim 7 is gathered and dissemination system, wherein, is afterwards during transfer of data at said applying type, and said data distribution module comprises:
Satellite base band data file determination module is used for application satellite name and application orbit number based on the data application information, confirms the corresponding remote sensing satellite base band data file of data dispense request that sends with subscriber equipment; And
Second sending module is used for determined remote sensing satellite base band data file is sent to the subscriber equipment that sends the data dispense request.
10. the data acquisition unit of a remote sensing satellite base band data comprises:
Detection module is used for continuing the assigned address of scan-data storage device, to detect in the data storage device whether have the data acquisition job order;
Base band data collection request generation module is used for detecting when having the data acquisition job order, based on the data acquisition job order, generates base band data collection request;
Base band data is gathered request sending module, is used for through network, and the base band data collection request that is generated is sent to the all-digital demodulation device corresponding with the data acquisition job order; And
The base band data acquisition module; Be used for based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from said all-digital demodulation device; And obtaining remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain
Wherein, said data acquisition job order is when receiving the data acquisition request of user's input, to generate, and is written in the assigned address of data storage device.
11. the data delivery device of a remote sensing satellite base band data comprises:
Data dispense request receiver module; Be used to receive the data dispense request of sending from subscriber equipment; Said data dispense request comprises user equipment information and data application information; Said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards; And
The data distribution module is used for after receiving the data dispense request, and based on the applying type in the data application information of data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
12. a remote sensing satellite base band data acquisition method comprises:
Continue the assigned address of the data storage device in base band data collection of scanning remote sensing satellite and the dissemination system, to detect in the data storage device whether have the data acquisition job order;
Detecting when having the data acquisition job order,, generate base band data collection request based on the data acquisition job order;
With the base band data collection request that is generated, send to the all-digital demodulation device corresponding with the data acquisition job order;
Based on the base band data collection request that is generated; Obtain remote sensing satellite base band data protocol package from the all-digital demodulation device corresponding with the data acquisition job order, said remote sensing satellite base band data protocol package is by the all-digital demodulation device back to be handled in the number of delivering a letter under the satellite that receives from the remote sensing satellite corresponding with the data acquisition job order to obtain; And
Obtain remote sensing satellite base band data and remote sensing satellite base band data timecode information after the remote sensing satellite base band data protocol package of being obtained resolved,
Wherein, said data acquisition job order is when receiving the data acquisition request of user's input, to generate, and is written in the assigned address of data storage device.
13. a remote sensing satellite base band data distribution method comprises:
The data dispense request that reception is sent from subscriber equipment; Said data dispense request comprises user equipment information and data application information; Said data application information comprises applying type, application satellite name and application orbit number, and said applying type comprises real-time Data Transmission and transfer of data afterwards; And
After receiving the data dispense request, the applying type that comprises in the data application information based on the data dispense request, application satellite name and application orbit number, the satellite base band data that institute is asked to distribute is distributed to subscriber equipment.
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| CN201510337603.5A CN104967561B (en) | 2012-08-22 | 2012-08-22 | The data delivery device and distribution method of remote sensing satellite base band data |
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| CN102832988B (en) | 2015-06-17 |
| CN104967561B (en) | 2018-11-09 |
| CN104967561A (en) | 2015-10-07 |
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